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But with his big-money boxing match against unbeaten — and supposedly retired — world champ Floyd “Money” Mayweather looming, the Irish UFC title holder has become a little more subtle with his online trolling.

McGregor posted a pair of seemingly innocuous photos on his Instagram account but both could ruffle feathers in Mayweather’s camp.

In one photo, McGregor is striking a fierce pose in a boxing ring. It is captioned with “I am a filthy Irish animal.”

But in the background, a large mural of McGregor connecting with a left hand to Mayweather’s face has been painted on the wall, clearly to get Money’s goat.

The other pic shows McGregor deep in concentration facing a training bag, with the same mural looming above his head. It just says, “Tunnel vision.”

The visual pokes at Mayweather are far less obvious than the usual tripe he spews — and will do again — in the lead up to fights.

McGregor, the 28-year-old UFC lightweight champion, will square off with Mayweather (49-0 in the ring) in a boxing bout set for Aug. 26 in Las Vegas.